Question 1192181
NEXT YEAR, {{{b+1=(c+1)-(x-2)}}}

Present ages,  {{{b+c+x=70}}}
and {{{c>b}}} and {{{c>x}}}.


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{{{b+1=c-x+3}}}
{{{b-c+x=2}}}


Simplified, this system:  {{{system(b+c+x=70,b-c+x=2)}}}

If try E1-E2, then {{{2c=68}}}, and then {{{highlight(c=34)}}}. 
From this, the best you know is that {{{b+x=34}}}.